forked from bartvdbraak/blender
376 lines
11 KiB
Python
376 lines
11 KiB
Python
#!BPY
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"""
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Name: 'Clean Meshes'
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Blender: 242
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Group: 'Mesh'
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Tooltip: 'Clean unused data from all selected mesh objects.'
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"""
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__author__ = ["Campbell Barton"]
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__url__ = ("blender", "elysiun", "http://members.iinet.net.au/~cpbarton/ideasman/")
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__version__ = "0.1"
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__bpydoc__ = """\
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Clean Meshes
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Cleans unused data from selected meshes
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"""
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# ***** BEGIN GPL LICENSE BLOCK *****
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#
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# Script copyright (C) Campbell J Barton
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#
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# ***** END GPL LICENCE BLOCK *****
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# --------------------------------------------------------------------------
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from Blender import *
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from Blender.Mathutils import TriangleArea
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import Blender
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import BPyMesh
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dict2MeshWeight= BPyMesh.dict2MeshWeight
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meshWeight2Dict= BPyMesh.meshWeight2Dict
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def rem_free_verts(me):
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vert_users= [0] * len(me.verts)
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for f in me.faces:
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for v in f:
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vert_users[v.index]+=1
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for e in me.edges:
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for v in e: # loop on edge verts
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vert_users[v.index]+=1
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verts_free= [i for i, users in enumerate(vert_users) if not users]
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if verts_free:
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pass
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me.verts.delete(verts_free)
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return len(verts_free)
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def rem_free_edges(me, limit=None):
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''' Only remove based on limit if a limit is set, else remove all '''
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edgeDict= {} # will use a set when python 2.4 is standard.
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for f in me.faces:
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for edkey in f.edge_keys:
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edgeDict[edkey] = None
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edges_free= []
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for e in me.edges:
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if not edgeDict.has_key(e.key):
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edges_free.append(e)
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if limit != None:
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edges_free= [e for e in edges_free if e.length <= limit]
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me.edges.delete(edges_free)
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return len(edges_free)
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def rem_area_faces(me, limit=0.001):
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''' Faces that have an area below the limit '''
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rem_faces= [f for f in me.faces if f.area <= limit]
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if rem_faces:
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me.faces.delete( 0, rem_faces )
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return len(rem_faces)
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def rem_perimeter_faces(me, limit=0.001):
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''' Faces whos combine edge length is below the limit '''
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def faceEdLen(f):
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v= f.v
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if len(v) == 3:
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return\
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(v[0].co-v[1].co).length +\
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(v[1].co-v[2].co).length +\
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(v[2].co-v[0].co).length
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else: # 4
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return\
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(v[0].co-v[1].co).length +\
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(v[1].co-v[2].co).length +\
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(v[2].co-v[3].co).length +\
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(v[3].co-v[0].co).length
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rem_faces= [f for f in me.faces if faceEdLen(f) <= limit]
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if rem_faces:
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me.faces.delete( 0, rem_faces )
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return len(rem_faces)
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def rem_unused_materials(me):
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materials= me.materials
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len_materials= len(materials)
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if len_materials < 2:
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return 0
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rem_materials= 0
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material_users= dict( [(i,0) for i in xrange(len_materials)] )
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for f in me.faces:
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# Make sure the face index isnt too big. this happens sometimes.
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if f.mat >= len_materials:
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f.mat=0
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material_users[f.mat] += 1
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mat_idx_subtract= 0
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reindex_mapping= dict( [(i,0) for i in xrange(len_materials)] )
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i= len_materials
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while i:
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i-=1
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if material_users[i] == 0:
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mat_idx_subtract+=1
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reindex_mapping[i]= mat_idx_subtract
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materials.pop(i)
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rem_materials+=1
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for f in me.faces:
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f.mat= f.mat - reindex_mapping[f.mat]
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me.materials= materials
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return rem_materials
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def rem_free_groups(me, groupNames, vWeightDict):
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''' cound how many vert users a group has and remove unsued groups '''
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rem_groups = 0
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groupUserDict= dict([(group,0) for group in groupNames])
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for vertexWeight in vWeightDict:
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for group, weight in vertexWeight.iteritems():
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groupUserDict[group] += 1
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i=len(groupNames)
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while i:
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i-=1
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group= groupNames[i]
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if groupUserDict[group] == 0:
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del groupNames[i]
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print '\tremoving, vgroup', group
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rem_groups+=1
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return rem_groups
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def rem_zero_weights(me, limit, groupNames, vWeightDict):
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''' remove verts from a group when their weight is zero.'''
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rem_vweight_count= 0
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for vertexWeight in vWeightDict:
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items= vertexWeight.items()
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for group, weight in items:
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if weight < limit:
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del vertexWeight[group]
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rem_vweight_count+= 1
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return rem_vweight_count
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def normalize_vweight(me, groupNames, vWeightDict):
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for vertexWeight in vWeightDict:
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unit= 0.0
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for group, weight in vertexWeight.iteritems():
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unit+= weight
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if unit != 1.0 and unit != 0.0:
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for group, weight in vertexWeight.iteritems():
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vertexWeight[group]= weight/unit
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def isnan(f):
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fstring = str(f).lower()
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if 'nan' in fstring:
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return True
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if 'inf' in fstring:
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return True
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return False
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def fix_nan_verts(me):
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rem_nan = 0
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for v in me.verts:
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co = v.co
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for i in (0,1,2):
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if isnan(co[i]):
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co[i] = 0.0
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rem_nan += 1
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return rem_nan
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def fix_nan_uvs(me):
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rem_nan = 0
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if me.faceUV:
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for uvlayer in me.getUVLayerNames():
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me.activeUVLayer = uvlayer
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for f in me.faces:
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for uv in f.uv:
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for i in (0,1):
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if isnan(uv[i]):
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uv[i] = 0.0
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rem_nan += 1
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return rem_nan
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def main():
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scn= Scene.GetCurrent()
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obsel= list(scn.objects.context)
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actob= scn.objects.active
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is_editmode= Window.EditMode()
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# Edit mode object is not active, add it to the list.
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if is_editmode and (not actob.sel):
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obsel.append(actob)
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#====================================#
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# Popup menu to select the functions #
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#====================================#
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CLEAN_ALL_DATA= Draw.Create(0)
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CLEAN_VERTS_FREE= Draw.Create(1)
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CLEAN_EDGE_NOFACE= Draw.Create(0)
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CLEAN_EDGE_SMALL= Draw.Create(0)
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CLEAN_FACE_PERIMETER= Draw.Create(0)
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CLEAN_FACE_SMALL= Draw.Create(0)
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CLEAN_MATERIALS= Draw.Create(0)
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CLEAN_GROUP= Draw.Create(0)
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CLEAN_VWEIGHT= Draw.Create(0)
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CLEAN_WEIGHT_NORMALIZE= Draw.Create(0)
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limit= Draw.Create(0.01)
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CLEAN_NAN_VERTS= Draw.Create(0)
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CLEAN_NAN_UVS= Draw.Create(0)
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# Get USER Options
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pup_block= [\
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('Verts: free', CLEAN_VERTS_FREE, 'Remove verts that are not used by an edge or a face.'),\
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('Edges: free', CLEAN_EDGE_NOFACE, 'Remove edges that are not in a face.'),\
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('Edges: short', CLEAN_EDGE_SMALL, 'Remove edges that are below the length limit.'),\
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('Faces: small perimeter', CLEAN_FACE_PERIMETER, 'Remove faces below the perimeter limit.'),\
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('Faces: small area', CLEAN_FACE_SMALL, 'Remove faces below the area limit (may remove faces stopping T-face artifacts).'),\
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('limit: ', limit, 0.001, 1.0, 'Limit for the area and length tests above (a higher limit will remove more data).'),\
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'Materials',\
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('Material Clean', CLEAN_MATERIALS, 'Remove unused materials.'),\
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('VGroup Clean', CLEAN_GROUP, 'Remove vertex groups that have no verts using them.'),\
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('Weight Clean', CLEAN_VWEIGHT, 'Remove zero weighted verts from groups (limit is zero threshold).'),\
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('WeightNormalize', CLEAN_WEIGHT_NORMALIZE, 'Make the sum total of vertex weights accross vgroups 1.0 for each vertex.'),\
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'Clean NAN values',\
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('NAN Verts', CLEAN_NAN_VERTS, 'Make NAN or INF verts (0,0,0)'),\
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('NAN UVs', CLEAN_NAN_UVS, 'Make NAN or INF UVs (0,0)'),\
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'',\
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('All Mesh Data', CLEAN_ALL_DATA, 'Warning! Operate on ALL mesh objects in your Blend file. Use with care'),\
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]
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if not Draw.PupBlock('Clean Selected Meshes...', pup_block):
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return
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CLEAN_VERTS_FREE= CLEAN_VERTS_FREE.val
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CLEAN_EDGE_NOFACE= CLEAN_EDGE_NOFACE.val
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CLEAN_EDGE_SMALL= CLEAN_EDGE_SMALL.val
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CLEAN_FACE_PERIMETER= CLEAN_FACE_PERIMETER.val
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CLEAN_FACE_SMALL= CLEAN_FACE_SMALL.val
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CLEAN_MATERIALS= CLEAN_MATERIALS.val
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CLEAN_GROUP= CLEAN_GROUP.val
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CLEAN_VWEIGHT= CLEAN_VWEIGHT.val
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CLEAN_WEIGHT_NORMALIZE= CLEAN_WEIGHT_NORMALIZE.val
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limit= limit.val
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CLEAN_ALL_DATA= CLEAN_ALL_DATA.val
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CLEAN_NAN_VERTS= CLEAN_NAN_VERTS.val
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CLEAN_NAN_UVS= CLEAN_NAN_UVS.val
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if is_editmode: Window.EditMode(0)
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if CLEAN_ALL_DATA:
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if CLEAN_GROUP or CLEAN_VWEIGHT or CLEAN_WEIGHT_NORMALIZE:
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# For groups we need the objects linked to the mesh
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meshes= [ob.getData(mesh=1) for ob in Object.Get() if ob.type == 'Mesh']
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else:
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meshes= Mesh.Get()
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else:
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meshes= [ob.getData(mesh=1) for ob in obsel if ob.type == 'Mesh']
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rem_face_count= rem_edge_count= rem_vert_count= rem_material_count= rem_group_count= rem_vweight_count= fix_nan_vcount= fix_nan_uvcount= 0
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if not meshes:
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if is_editmode: Window.EditMode(1)
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Draw.PupMenu('No meshes to clean')
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Blender.Window.WaitCursor(1)
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for me in meshes:
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if me.multires:
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multires_level_orig = me.multiresDrawLevel
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me.multiresDrawLevel = 1
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print 'Warning, cannot perform destructive operations on multires mesh:', me.name
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else:
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if CLEAN_FACE_SMALL:
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rem_face_count += rem_area_faces(me, limit)
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if CLEAN_FACE_PERIMETER:
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rem_face_count += rem_perimeter_faces(me, limit)
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if CLEAN_EDGE_SMALL: # for all use 2- remove all edges.
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rem_edge_count += rem_free_edges(me, limit)
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if CLEAN_EDGE_NOFACE:
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rem_edge_count += rem_free_edges(me)
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if CLEAN_VERTS_FREE:
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rem_vert_count += rem_free_verts(me)
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if CLEAN_MATERIALS:
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rem_material_count += rem_unused_materials(me)
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if CLEAN_VWEIGHT or CLEAN_GROUP or CLEAN_WEIGHT_NORMALIZE:
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groupNames, vWeightDict= meshWeight2Dict(me)
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if CLEAN_VWEIGHT:
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rem_vweight_count += rem_zero_weights(me, limit, groupNames, vWeightDict)
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if CLEAN_GROUP:
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rem_group_count += rem_free_groups(me, groupNames, vWeightDict)
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pass
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if CLEAN_WEIGHT_NORMALIZE:
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normalize_vweight(me, groupNames, vWeightDict)
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# Copy back to mesh vertex groups.
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dict2MeshWeight(me, groupNames, vWeightDict)
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if CLEAN_NAN_VERTS:
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fix_nan_vcount = fix_nan_verts(me)
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if CLEAN_NAN_UVS:
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fix_nan_uvcount = fix_nan_uvs(me)
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# restore multires.
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if me.multires:
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me.multiresDrawLevel = multires_level_orig
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Blender.Window.WaitCursor(0)
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if is_editmode: Window.EditMode(0)
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stat_string= 'Removed from ' + str(len(meshes)) + ' Mesh(es)%t|'
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if CLEAN_VERTS_FREE: stat_string+= 'Verts: %i|' % rem_edge_count
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if CLEAN_EDGE_SMALL or CLEAN_EDGE_NOFACE: stat_string+= 'Edges: %i|' % rem_edge_count
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if CLEAN_FACE_SMALL or CLEAN_FACE_PERIMETER: stat_string+= 'Faces: %i|' % rem_face_count
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if CLEAN_MATERIALS: stat_string+= 'Materials: %i|' % rem_material_count
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if CLEAN_VWEIGHT: stat_string+= 'VWeights: %i|' % rem_vweight_count
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if CLEAN_GROUP: stat_string+= 'VGroups: %i|' % rem_group_count
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if CLEAN_NAN_VERTS: stat_string+= 'Vert Nan Fix: %i|' % fix_nan_vcount
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if CLEAN_NAN_UVS: stat_string+= 'UV Nan Fix: %i|' % fix_nan_uvcount
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Draw.PupMenu(stat_string)
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if __name__ == '__main__':
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main()
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